The neutron-rich Mg isotopes: first results from MINIBALL at REX-ISOLDE
Journal article, 2005

We report on the first radioactive beam experiment performed at the recently commissioned REX-ISOLDE facility at CERN in conjunction with the highly efficient γ spectrometer MINIBALL. Using Mg-30 ions accelerated to an energy of 2.25 MeV/u together with a thin Ni-nat target, Coulomb excitation of the first excited 2(+) states of the projectile and target nuclei well below the Coulomb barrier was observed. From the measured relative deexcitation γ-ray yields the B(E2;0(gs)(+)→ 2(1)(+)) value of Mg-30 was determined to be 241(31)e(2) fm(4). Our result is lower than values obtained at projectile fragmentation facilities using the intermediate-energy Coulomb excitation method, and confirms the theoretical conjecture that the neutron-rich magnesium isotope Mg-30 resides outside the "island of inversion."

DETECTOR

ISOTOPES

SILICON

COLLECTIVITY

NUCLEI

TRANSITION

SHELL-MODEL

ISOLDE

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Published in

Nuclear Physics A

0375-9474 (ISSN)

Vol. 752 Issue 1-4 SPEC. ISS. p. 273C-278C

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Subject Categories (SSIF 2011)

Subatomic Physics

Identifiers

DOI

10.1016/j.nuclphysa.2005.02.071

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9/15/2020